PokerSolver
PokerSolver/6-max · 60bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs CO 3-bet 4bb

BB vs CO 3-bet 4bb

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 60bb · CO limps, BB isolates to 2bb, CO 3-bets to 4bb · Big blind to act

6-max · 60bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 7.46bbYour cards?
2bb
4bb
0.5bb

Tap your two cards.

Big blind's range

440 of 1,326 combos get here
Fold 43.9%Call 26.4%Raise 9.2bb 20.7%All-in 59.84bb 9%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when CO limps, BB isolates to 2bb, CO 3-bets to 4bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 60bb?

CO limps, BB isolates to 2bb, CO 3-bets to 4bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 60bb: the big blind (BB) folds 43.9%, calls 26.4%, raises 9.2bb 20.7% and goes all-in 59.84bb 9%. Always call: 77-88, 55, KTs. Always raise 9.2bb: AA. Mixed: 99-KK, A8s+, A5s, KJs+, K9s, K6s-K7s, Q8s+, Q5s, JTs, J8s, T7s+, T5s, 97s+, 87s, 85s, 75s+, 64s, 54s, 52s, ATo+, A7o-A8o, KTo+, QTo+, JTo, T9o.

Always fold
Q2s, J7s, 65s, K9o
Always call
77-88, 55, KTs
Always raise 9.2bb
AA
Always all-in 59.84bb
No hand plays this every time
Mixed
99-KK, A8s+, A5s, KJs+, K9s, K6s-K7s, Q8s+, Q5s, JTs, J8s, T7s+, T5s, 97s+, 87s, 85s, 75s+, 64s, 54s, 52s, ATo+, A7o-A8o, KTo+, QTo+, JTo, T9o
Settings: 6-max · 60bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 60bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.91). A jackpot fee on bigger pots is not in this solve, so lines that build big pots may be slightly too loose. Bet sizes are the solved ones; a size that is not here plays like the nearest one.

Fits exactly: no game we have checked.

Close: CoinPoker cash with antes NL50 (rake before the flop in 3-bet pots there, none here).

Rake sources: the ante from 93 of our own CoinPoker hands at $0.25/$0.50 with a $0.08 ante, played 2026-09-30; the caps and the preflop rule from coinpoker.com/games/texas-holdem/, fetched 2026-10-31.